Pump.



H. J. FEYZES.

PUMP.

APPLICATION FILED APR-1, l9l5- 2 SHEETS-SHEET I.

Patented 33' 7,1918.

H. J. FEYZES. I

PUMP.

APPLICATION FILED APR- 1. I915.

Patented. May 7,1918.

2 SHEETS-SHEET 2.

. it 1:; 1T. JE'EYWES, (NF CLEVELAND, OHIO, ASSIGNOR 01F ONE-HALF TO THE PETERS Specification of Letters Patent.

, F CLEVELAND, OHIO, A CORPORATION OF OHIO.

application filed April 7, 1915. Serial No. 19,624.

To all whom it concern:

Be it known that l[, HENRY J. lfinrzns, a

citizen of the United States, residing at- Clevelaud, in the county of Cuyahoga and State of Ohio, have invented a certam new and useful Improvement in Pumps, of which the following is a full, clear, and exact description, reference being had to the accompanyin drawings.

This invention relates to improvements in rotary pumps; and it has for its object to provide a pp. of the aforesaid character that is extremely eficient, and that is of "ets thereof. Tn this connection it may be stated that a further object of the-invention is to provide a rotary pump, the capacity or output of which may be very easily controlled and changed at will, without altering the speed of the pump.

Further objects of the invention are to provide a pp of the above nature that operates very easily and quietly; that is ex-' tremely durable that is constructed in such manner as to afford easy access to the operating parts thereof; to design the pump so that such parts may be easily removed and replaced; and to utilize, for the wea "parts of the pump standard supplies that can be easily and cheaply secured; to provide a rotary pump that can be driven .with' equal efficiency in either direction; and to provide a that is adapted to be cona ct and outlet pipes of various capacities.

The above, and further objects which 1 become apparent as this description pro ceeds, are attained in a pump constructed in accordance with the accompanying drawings, which form a part of this specification,

and while T will proceed. to describe the emhot of the invention illushrated therein, in detail, T wish to be understood as not limiting myself to the structural details thereof, er than is required by the terms of the annexed claims and is rendered necessary by the state of the prior art. Tn

the drawings, Figure 1 is aside elevation of my improved pump; lFig. 2 is an eleval horn the left of hi. Fig. 3

is a substantially central vertical section through the pump in a plane parallel to Fig. 1; Fig. 4 is a horizontal section through Patented llllay t, g

the pump, the view being taken substangasket 5, of suitable packing material, be-

lng interposed between the cover and. the casing member. Extending outward from thecover 3, and from the circular wall 6 of the casing, and arranged in axial alinement with eachother, are hollow bosses 7, the bores whereof contain suitable bushings 8 within which a shaft 9 is journaled. The

bosses 7 are threaded for the application of gland nuts 10 between the respective ends of which and the adjacent ends of the bosses,

7, is adapted to be compressed packin material 11, to efiectually seal the shaft earings against leakage.

The casing lls provided with an upper and a lower extension and 16, respectively, throughthe respective ones of which extend the ports-l7 and 18. The former "till port communicates with the chamber 2, to

one side of its vertical axis and above its horizontal axis,while the latter port communicates with said chamber on the same side of its vertical axis and below the horizontal axis thereof, These ports may be of the same width, and the width of port 18 may be ascertained from Fig. 4. Direct, communication between ports 17 and lS'may be established through a by-pass 19 that is formed in an enlargement 20 on the side of the casing l. The by-pass is intersected by a transverse, tapered bore 21 which contains a correspondingly shaped valve body- 22, having a through port 23." The valve body is retained within its here by a nut 24: that is threaded upon an extension 25 of the reduced end of the valve body, and a washer 26 is interposed between said nut and the adjacent surface of the casing. The large end of the valve body has a groove 27 for too perfect freedom of movement.

dle 28, and a screw 29 secures the handle to the valve body.

Keyed to the shaft 9, whereit passes through the chamber 2, is the hub 35 of a rotor 36. It will be observed that the shaft 9 is eccentric with respect to the cylindrical chamber 2, and that the rotor 36 has a radius equal to the shortest distance between the center of the shaft9 and the cylindrical wall of the chamber. It will be observed from Fig. 3, that the portion of the cylindrical wall between the adjacent edges of the ports 17 and 18, is nearest the shaft 9, and that the periphery of the rotor will engage only this portion of the wall of the chamber. From this it will be seen that, during arotation of the rotor, a given point on its periphery gradually leaves this portion of the wall of the chamber, through 180 of the rotation, and through the remaining 180, gradually approaches said wall. The rotor 36 is provided with a plurality of radial pockets 37, the side walls 38 whereof are substantially parallel; and a cylindrical piston, compnsin a sleeve or tube, occupies each of the poo ets 37, and is of a diameter to fit between the parallel walls thereof. The peripheral portions of the rotor, and the plstons 39, extend from the circular wall 6 of the casing, to the opposed surface of the cover 3, only suflicient clearance being allowed between the surfaces to permit of It will be noted from Fig. 4 that the hub of the rotor isof less width than the aforesaid peripheral portions, and piston retaining rings 40 surround the exposed portions of the shaft 9, beyond the .ends of the hub. It will be observed from Fig. 3, that the aggregate diameters of two of the pistons 39, and one of the rings 40, is equal to-the diameter of.

the chamber 2. Therefore, the rings 40 act to constantly retain the pistons against the cylindrical wall of the chamber.

The extensions 15 and '16, already referred to, are externally threaded for the application of unions, a union 45 being shown connected to the extension 16. Unionshaving various sized adapters 46 may be used and the adapters may be corrugated for the ap plication of flexible tubes, such a tube being shown at 47, or the adapters may be threaded for cooperation with metallic pipes or other devices.

A bracket 49 is cast integral with the casin and forms a convenient means of attac ing the pump to a supportin structure. Lubricating devices 50 are t xeaded into the outer ends of the tubular extensions 51, that are cast with the cover 3 and the cylindrical wall 6 of the casing, and the inner ends of these extensions join the bosses 7 and their bores communicate lubricant to the bearin of the shaft 9.

I have aiieady explained how the peripheral portions of the rotor 36 gradually advance toward and recede from the cylindrical wall of the chamber 2 durin the rotation of the rotor. Also, how the pistons 39 are retained in constant engagement with the cylindrical wall of said chamber. It is obvious from these two facts, that, when the shaft 9 is rotated, as for instance in the direction of the arrow in Fig. 3, that a suction is created in the port 18, as the adjacent segmental portion of the rotor recedes from the cylindrical wall of the chamber 2, and that the fluid which has been drawn into the chamber, by such action, is confined therein between the adjoining pistons 39, until the advancing piston reaches the rear edge of the port 17. Immediately upon the passage ofthe pistons beyond such edge, the fluid that has been confined to the rear of said piston, will be expelled gradually through the port by the advancement of the aforesaid segmental portion of the rotor toward the cylindrical wall of the chamber. Assuming that the shaft 9 is driven at a given speed, and that the capacity or output of t e pump is more than is desired, such output may be reduced by turning the valve body'22 so as to establish communication between the orts 17 and 18 through the bypass 19. T e opening of the valve will cause some of the fluid that is expelled from the outlet side of the chamber 2 mm drawn back through the by-pass and circulated again through said chamber. This condition naturally reduces the suction within the inlet pipe, and consequentl decreases the amount of fluid that is expe ed through the outlet pipe. The variable capacity-uniform speed feature of my pump makes it especially valuable for use in cooling systems of internal combustion engines, for, as is well known to those familiar with the art of engine cooling, it is advantageous to change the velocity of the coolin fluid to meet varying conditions under w ich the engine is required to operate. For instance, in cold weather, the velocity of the fiuidmav be retarded to maintain a comparatively hlgh temperature of the engine and thus facili- 'tate starting; or in warm weather, the vement mounted within said casing, and coeounicate with its interior naoaowo tun;

eentriealllly with res eot thereto, said casing with said inlet and outlet ports torthepnr- 16 having an inlet an an outlet filorrt which ough its cylindrical wall and are spaced angularly apart, said casing having an enlargement on that portion of its periphery which is located nearest the eccentrically mounted rotary element and said enlargement having a valve controlled by-pass oommunicating pose described.

In testimony whereof, hereunto a my signature in the presence of two witnesses.

HENRY J. JFEYZES.

Witnesses:

BRENNAN 1B. Wnsr, HUGH MCGIJLL. 

